code: def convert_lines_to_paragraph(lines):
      """Convert a series of lines, each consisting of
      (box, character) tuples, into a multi-line string."""
      return "\n".join(
          ["".join([c[-1] for c in line]) for line in lines]
      )
  
imports: import os
  import math
  import glob
  import typing
  import random
  import zipfile
  import string
  import itertools
  import cv2
  import tqdm
  import numpy
  import essential_generators
  import PIL.Image
  import PIL.ImageDraw
  import PIL.ImageFont
  import fontTools.ttLib
  from .None import tools
label_desc: Use image node_id 9 for calling a global function with example usage: convert_lines_to_paragraph(lines) and returns: str